Definition of "pickler"

pickler

noun
plural picklers
1. One who pickles food products.
2. A cucumber grown for pickling.
  Quotations
  The slicing cucumbers' production systems are geared to be first on the market, whereas for the picklers this urgency is not so great.
  1989, Ib Libner Nonnecke, Vegetable Production, page 520
3. A machine that pickles metal.
4. (programming) (in the Python programming language) A program or algorithm that performs serialization.